1_Balance_Salient_Characteristics_FY26.docx

Listed below are salient characteristics for an analytical balance that will meet the needs of the Organic Methods Group at the Region 5 Laboratory Services and Applied Sciences Division for the preparation of analytical standards, reagents, and samples for low-level pesticides analysis, alkylphenols analysis, and per- and polyfluoroalkyl substances analysis.

· The balance must be a benchtop analytical balance, meaning the weighing area is enclosed in a chamber to minimize air flow and dust contaminants, with a solid weighing area (or pan size) of approximately 80 mm x 80 mm.

· The balance must have a weighing chamber that is automated, meaning the enclosure opens at the touch of a button or equivalent to allow for hands-free measurement and increased automation.

· At a minimum, the balance must be capable of measuring mass to the ten thousandths place (i.e. “X” in 0.000X). In other terms, the readability of the balance must be 0.01 milligrams, at a minimum.

· The repeatability must be below 0.02 mg at a 5% load.

· The linearity deviation must be 0.1 mg or below.

· At a minimum, the balance must be capable of weighing up to 120 grams.

· The balance must have an anti-electrostatic component built in to remove any electrostatic charge from the weighing chamber.

· The balance must be able to connect to a computer with a Microsoft Windows 11 Enterprise operating system via USB or USBC cable or equivalent. If said cable is not automatically included with the balance, it must be added to the quote.

· The balance must have a print button or equivalent to be able to send mass readings to a computer.

· The balance must meet the laboratory’s ISO 17025 certification standard and be certified during installation. Said ISO 17025 certification at installation must be included with the balance on any quote.